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automated-road-marker

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@bytecod3

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KiCad projectAll 43 files, ready to open in KiCad573 KB
For fabricationGerbers, drill, pick-and-place and BOMGerbers and drill zip13 KBGerbers and drill zip: road-marking-robot-circuits156 KBPick and place (CSV)35 BPick and place (CSV): road-marking-robot-circuits5.3 KBBOM CSV13 KB
Schematic PDFEvery sheet, to read or print623 KB
3D modelThe board with its parts, for an enclosure (GLB)3D model (GLB)2.8 KB3D model (GLB): road-marking-robot-circuits8.2 MB
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README

automated-road-marker

Automated road marker project

Battery sizing and component voltages

ComponentVoltage rating (V)Current rating
Arduino MEGA 25607-12-
TT 130 accelerator/decelerator motor3-6170mA(at 4.5V)
HC-SR04 ultrasonic sensor54mA
12V Solenoid valve G1/2 DN15 BSPP Pressure Type12416mA
12V DC 385 high temperature water pump12400mA
YF-S401 Water Flow Sensor515 mA (at 5V)

Recomended Battery = 12V >2000mAh

firmware dependencies

The following libraries need to installed in Arduino

  1. LiquidCrystal I2C library by Frank de Brabander
  2. I2Cdev

Following a straight line

The robot follows a heading that is referenced to where it starts. To do this,

  1. place the robot on the surface you want to paint

  2. press the reset button WHILE THE ROBOT IS STATIONARY! There should be no movements or shaking.

  3. The robot should follow a straight heading.

  4. To stop the robot, press the ON/OFF button, or disconenct the battery

  5. If using LCD, the screen should show the flow rate.

Paint system

The paint sequence is as follows:

  1. Once the robot is turned on, it paints at intervals of 5 seconds( this can be changed in the code. See code!). This paint sequence produces a dotted line
  2. Pump 1, pump 2 and solenoid are turned on at the same time.
  3. Flow rate is measured and displayed.
  4. Process repeats.
  5. You can increase the length of the dotted line by increasing the paint interval. (Again, see code comments for this)

ultrasonic designations

US1 -> Front ultrasonic US2 -> Right ultrasonic US3 -> Left ultrasonic US4 -> Resorvoir level ultrasonic

Ultrasonic Conclusion

Ultrasonic avidance is not necesssary in the real-world. Why are you painting a road with obstacles??

Flow meter interrupt pin change

The schematic show flow meter signal connected to pin 10. From tests, pin 10 cannot support interrupts. Please use pin 2 for the flow meter signal.( See code on flow meter Pin -> in defines. h. If you wish to change the pin to pin number 3).

Only pin 2 and 3 can be used for the flow meter.

LCD library installation

If you cannot find the Arduino-LiquidCrystal-I2C on Arduino Library manager, copy the Arduino-LiquidCrystal-I2C folder into your Arduino installation folder. You should be able to compile the code with no errors.

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